body {
    font-family: sans-serif;
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
}

form {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

input[type="text"] {
    flex-grow: 1;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button[type="submit"] {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #22b8cf;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button[type="submit"]:hover {
    background-color: #3bc9db;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

li {
    display: flex;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid #ccc;
}

li input[type="checkbox"] {
    margin-right: 10px;
}

li span {
    flex-grow: 1;
}

li .delete-button {
    margin-left: 10px;
    font-size: 16px;
    color: #22b8cf;
    cursor: pointer;
}